PSKS has issued a series of post cards showing old time scenery of Kuching and famous historical buildings for exhibitions from 1999 to 2004, all carry a serial number. The society also issued special cachets in conjunction with each postcard issued.
Post card and cachets issued for Kuching'99
Post card and cachet issued for Kuching'2000
Post card and cachet issued for Kuching'01
Post card and cachet issued for Kuching'02
Post cards and cachets issued for Borneo'03
Post cards and cachets issued for Stamp Fair'04